APA ציטוט

Holton,C.A, & Sheehan,J. (1993). Peterson graph. Cambridge University press.

Chicago Edition Citation

Holton,C.A, and Sheehan,J. Peterson Graph. Cambridge: Cambridge University press, 1993.

ציטוט MLA

Holton,C.A, and Sheehan,J. Peterson Graph. Cambridge University press, 1993.